DIRECT CURRENT BUS MANAGEMENT CONTROLLER

• US 20130049648A1
• Filed: 08/25/2011
• Published: 02/28/2013
• Est. Priority Date: 08/25/2011
• Status: Active Grant

• Current Assignee: Hamilton Sundstrand Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Hamilton Sundstrand Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Rozman, Gregory I., Moss, Steven J.
• Granted Patent: US 8,890,463 B2
• Time in Patent Office: Days
• US Class Current: 318/139
• CPC Class Codes: B60L 50/15 with additional electric power supply with capacitors charged by engine-driven generators B60L50/40; with batteries charged by engine-driven generators B60L50/61
• CPC Class Codes: B60L 7/22 Dynamic electric resistor braking, combined with dynamic electric regenerative braking
• CPC Class Codes: B60R 16/03 for supply of electrical power to vehicle subsystems or for circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: H02J 1/10 Parallel operation of dc sources
• CPC Class Codes: H02J 1/14 Balancing the load in a network
• CPC Class Codes: H02J 2310/40 The network being an on-board power network, i.e. within a vehicle
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

Abstract

A direct current bus management system can include a power management and distribution unit, having a source management section, a bus management section coupled to the source management section, a load management section coupled to the bus management section, a DC bus coupled to the power management and distribution unit, a plurality of DC sources coupled to the source management section and a plurality of loads coupled to the load management section, wherein the bus management section is configured to reconfigure excess DC power on the DC bus from the DC inputs from the plurality of DC sources based on a plurality of priorities, a plurality of feedback signals and a plurality of system parameters.

Claims

1. A direct current (DC) bus management system, comprising:

a power management and distribution (PMAD) unit, including;

a source management section;

a bus management section coupled to the source management section; and

a load management section coupled to the bus management section;

a DC bus coupled to the PMAD unit;

a plurality of DC sources coupled to the source management section; and

a plurality of loads coupled to the load management section,

wherein the bus management section is configured to reconfigure excess DC power on the DC bus from DC inputs from the plurality of DC sources based on a plurality of priorities, a plurality of feedback signals and a plurality of system parameters.

2. The system as claimed in claim 1 further comprising an energy storage unit coupled to the bus management section.

3. The system as claimed in claim 2 wherein the bus management section redirects some or all of the excess DC power to be stored in the energy storage unit.

4. The system as claimed in claim 2 further comprising a fan load coupled to the load management section and the bus management section.

5. The system as claimed in claim 4 wherein the bus management section redirects some or all of the excess DC power to drive the fan load.

6. The system as claimed in claim 4 further comprising a power dissipater coupled to the bus management section.

7. The system as claimed in claim 6 wherein the bus management section redirects some or all of the excess DC power to be dissipated in the power dissipater.

8. The system as claimed in claim 6 wherein the bus management section includes a DC bus management controller in signal communication with the energy storage unit, the fan load and the power dissipater.

9. The system as claimed in claim 8 wherein the DC bus management controller includes a process configured to:

compare a DC bus voltage against a plurality of voltage references;

in response to an excess of the DC voltage compared to a first voltage reference of the plurality of voltage references, send a first control signal instructing redirection of the DC power to the energy storage unit;

in response to an excess of the DC voltage compared to a second voltage reference of the plurality of voltage references, send a second control signal instructing redirection of the DC power to drive the fan load;

in response to an excess of the DC voltage compared to a third voltage reference of the plurality of voltage references, send a third control signal instructing a decrease generation of a source of DC power to the DC bus; and

in response to an excess of the DC voltage compared to a third voltage reference of the plurality of voltage references, send a fourth control signal instructing a redirection of the DC power to a power dissipater.

10. A power management and distribution (PMAD) apparatus, comprising:

a source management section;

a bus management section coupled to the source management section;

a load management section coupled to the bus management section; and

a DC bus coupled to the a source management section, the bus management section, and the load management section,

wherein the bus management section is configured to reconfigure excess DC power on the DC bus based on a plurality of priorities, a plurality of feedback signals and a plurality of system parameters.

11. The apparatus as claimed in claim 10 wherein the bus management section is configured to be coupled to an energy storage unit, and to redirect the excess DC power to be stored in the energy storage unit.

12. The system as claimed in claim 10 wherein the bus management section is configured to be coupled to a fan load and to redirect the excess DC power to drive the fan load.

13. The system as claimed in claim 10 wherein the bus management section is configured to be coupled to a power dissipater and to redirect the excess DC power to be dissipated in the power dissipater.

14. The system as claimed in claim 10 further comprising a DC bus management controller disposed in the bus management section.

15. The system as claimed in claim 14 wherein the DC bus management controller includes a process configured to:

compare a DC bus voltage against a plurality of voltage references;

in response to an excess of the DC voltage compared to a first voltage reference of the plurality of voltage references, send a first control signal instructing a first redirection of DC power in the DC bus;

in response to an excess of the DC voltage compared to a second voltage reference of the plurality of voltage references, send a second control signal instructing a second redirection of DC power in the DC bus; and

in response to an excess of the DC voltage compared to a third voltage reference of the plurality of voltage references, send a third control signal instructing a third redirection of DC power in the DC bus.

16. A direct current (DC) bus management method in a DC bus, the method comprising:

comparing a DC bus voltage against a plurality of voltage references;

in response to an excess of the DC voltage compared to a first voltage reference of the plurality of voltage references, sending a first control signal instructing a first redirection of DC power in the DC bus;

in response to an excess of the DC voltage compared to a second voltage reference of the plurality of voltage references, sending a second control signal instructing a second redirection of DC power in the DC bus; and

in response to an excess of the DC voltage compared to a third voltage reference of the plurality of voltage references, sending a third control signal instructing a third redirection of DC power in the DC bus.

17. The method as claimed in claim 16 wherein the first control signal instructs redirection of the DC power to an energy storage unit.

18. The method as claimed in claim 16 wherein the second control signal instructs redirection of the DC power to drive a cooling fan.

19. The method as claimed in claim 16 wherein the third control signal instructs a decrease of DC power generation from a source of DC power to the DC bus.

20. The method as claimed in claim 19 further comprising sending a fourth control signal instructing a redirection of the DC power to a power dissipater.